Fixed #7387 - Fixed circular import problem when importing `contrib.contenttypes.generic` module.

Query subclasses which provide extra functionality beyond simple data retrieval.

"""

from django.contrib.contenttypes import generic

from django.core.exceptions import FieldError

from django.db.models.sql.constants import *

from django.db.models.sql.datastructures import RawValue, Date

from django.db.models.sql.datastructures import Date

from django.db.models.sql.query import Query

from django.db.models.sql.where import AND

        More than one physical query may be executed if there are a

        lot of values in pk_list.

        """

        from django.contrib.contenttypes import generic

        cls = self.model

        for related in cls._meta.get_all_related_many_to_many_objects():

            if not isinstance(related.field, generic.GenericRelation):

    def get_ordering(self):

        return ()